Over 1.5 hours of glow power. The Super Mcd466 & Mcd464 were designed for Single Cylinder Engines on Airplanes, Helicopters, Boats, and Cars for starting and maintaining idle at low throttle. You can parallel the On Board Glow Driver with your throttle servo using a "Y" cord for automatic "ON" operation at low throttle settings (fully adjustable set-point). Another setup option is it can be switched on from your TX at any time you desire using an available channel. The external Deans charge jack will allow you to charge overnight using the AC Charger provided or boost the on board battery from an external 1.5V DC source. A remote L.E.D. indicator lets you know when the glow plug is turned on. It can be mounted on the instrument panel or any convenient place to monitor the switching circuit. It is optically coupled to eliminate any possibility of RFI from the engine linkages or wiring. The system includes: Assembled Electronics. NiMH batteries (inside plastic box for protection). Glow plug harness (Leads are 18". Leads may be shortened but NOT LENGTHENED). AC Charger (with the Model Mcd466). Weight is 3.5 oz. including batteries.